There are some players everyone knows will be one-and-done or two-and-done type of players. Washington's Markelle Fultz, Kansas' Josh Jackson, UCLA's Lonzo Ball -- no one expected these players to spend more than a year in college.

After last season’s finish, stars like Indiana’s OG Anunoby and Syracuse’s Tyler Lydon were on the NBA’s radar, so the Hoosiers and Orange knew they would have to prepare for life without these players.

But then there are the unexpected departures, players who have a breakout freshman or sophomore season and head to the NBA. Because 80 percent or more of the ESPN 100 for the Class of 2017 are already committed by the time the season starts, these teams have to scramble for replacements.